165335694256 has 20 divisors (see below), whose sum is σ = 321006686400. Its totient is φ = 82495259072.

The previous prime is 165335694203. The next prime is 165335694257. The reversal of 165335694256 is 652496533561.

It is a super-2 number, since 2×165335694256² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165335694197 and 165335694206.

It is not an unprimeable number, because it can be changed into a prime (165335694257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10778851 + ... + 10794178.

It is an arithmetic number, because the mean of its divisors is an integer number (16050334320).

Almost surely, 2^165335694256 is an apocalyptic number.

165335694256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165335694256 is a deficient number, since it is larger than the sum of its proper divisors (155670992144).

165335694256 is a wasteful number, since it uses less digits than its factorization.

165335694256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21573516 (or 21573510 counting only the distinct ones).

The product of its digits is 17496000, while the sum is 55.

The spelling of 165335694256 in words is "one hundred sixty-five billion, three hundred thirty-five million, six hundred ninety-four thousand, two hundred fifty-six".